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IPR001787 is a Large ribosomal subunit protein bL21.
<p>This entry represents the Large ribosomal subunit protein bL21 found in bacteria and eukaryotic organelles such as chloroplast and mitochondria. In Escherichia coli, bL21 is known to bind to the 23S rRNA in the presence of bL20. It belongs to a family of ribosomal proteins which, on the basis of sequence similarities, groups:</p> <ul><li>Bacterial bL21 (old name L21).</li> <li>Marchantia polymorpha, chloroplast bL21 (old name L21).</li> <li>Dictyostelium discoideum, mitochondrial bL21m (old name L21).</li> <li>Plant, chloroplast bL21c (old name L21, nuclear-encoded) and mitochondrial bL21m (old name L21).</li></ul> <p>Bacterial bL21 is a protein of about 100 amino-acid residues, the mature form of the spinach chloroplast L21 has 200 residues.</p>
This description is obtained from EB-eye REST.
GO predictions are based solely on the InterPro-to-GO mappings published by EMBL-EBI, which are in turn based on the mapping of predicted domains to the InterPro dataset. The InterPro-to-GO mapping was last updated on , while the GO metadata was last updated on .
| GO term | Namespace | Name | Definition | Relationships |
|---|---|---|---|---|
| Molecular function | RNA binding | Interacting selectively and non-covalently with an RNA molecule or a portion thereof. | ||
| Molecular function | Structural constituent of ribosome | The action of a molecule that contributes to the structural integrity of the ribosome. | ||
| Cellular component | Ribosome | An intracellular organelle, about 200 A in diameter, consisting of RNA and protein. It is the site of protein biosynthesis resulting from translation of messenger RNA (mRNA). It consists of two subunits, one large and one small, each containing only protein and RNA. Both the ribosome and its subunits are characterized by their sedimentation coefficients, expressed in Svedberg units (symbol: S). Hence, the prokaryotic ribosome (70S) comprises a large (50S) subunit and a small (30S) subunit, while the eukaryotic ribosome (80S) comprises a large (60S) subunit and a small (40S) subunit. Two sites on the ribosomal large subunit are involved in translation, namely the aminoacyl site (A site) and peptidyl site (P site). Ribosomes from prokaryotes, eukaryotes, mitochondria, and chloroplasts have characteristically distinct ribosomal proteins. | ||
| Biological process | Translation | The cellular metabolic process in which a protein is formed, using the sequence of a mature mRNA or circRNA molecule to specify the sequence of amino acids in a polypeptide chain. Translation is mediated by the ribosome, and begins with the formation of a ternary complex between aminoacylated initiator methionine tRNA, GTP, and initiation factor 2, which subsequently associates with the small subunit of the ribosome and an mRNA or circRNA. Translation ends with the release of a polypeptide chain from the ribosome. |
| Transcript | Name | Description | Predicted domains | Domain count |
|---|---|---|---|---|
| – | PREDICTED: 50S ribosomal protein L21, mitochondrial-like [Cicer arietinum] gi|502113030|ref|XP_004494520.1| | 11 | ||
| – | PREDICTED: 50S ribosomal protein L21, chloroplastic-like [Cicer arietinum] gi|502118696|ref|XP_004496371.1| | 16 | ||
| – | 50S ribosomal protein L21, related protein; TAIR: AT4G30930.1 Ribosomal protein L21; Swiss-Prot: sp|Q8L9A0|RM21_ARATH 50S ribosomal protein L21, mitochondrial; TrEMBL-Plants: tr|A0A1J7HC53|A0A1J7HC53_LUPAN Uncharacterized protein; Found in the gene: LotjaGi4g1v0056300 | 12 | ||
| – | 50S ribosomal protein L21; TAIR: AT1G35680.1 Ribosomal protein L21; Swiss-Prot: sp|P51412|RK21_ARATH 50S ribosomal protein L21, chloroplastic; TrEMBL-Plants: tr|I3SFQ7|I3SFQ7_LOTJA Uncharacterized protein; Found in the gene: LotjaGi5g1v0280200 | 17 |
A list of co-occurring predicted domains within the L. japonicus gene space:
| Predicted domain | Source | Observations | Saturation (%) |
|---|---|---|---|
| TIGR00061 | TIGRFAM | 1 | 25.00 |